Hi
When adding a TYPE_USE annotation with runtime retention to the throws
exception clause of a constructor of an inner class, these annotations are not
found via Constructor.getAnnotatedExceptionType().getDeclaredAnnotations() on
Java 9+, but present when running on Java 8.
For static nested classes, the annotations are correctly found on Java 9+.
See sample code below.
Looking in the .class file for the nested classes (with javap), the runtime
annotation is present there:
public app1.MiscTest8$Inner(app1.MiscTest8) throws java.lang.Exception;
(...)
RuntimeVisibleTypeAnnotations:
0: #17(): THROWS, type_index=0
app1.MiscTest8$MyAnnotation
and
public app1.MiscTest8$StaticInner() throws java.lang.Exception;
(...)
RuntimeVisibleTypeAnnotations:
0: #14(): THROWS, type_index=0
app1.MiscTest8$MyAnnotation
When I run it on Java 8, I get the following output:
=== public app1.MiscTest8$Inner(app1.MiscTest8) throws java.lang.Exception ===
[@app1.MiscTest8$MyAnnotation()]
=== public app1.MiscTest8$StaticInner() throws java.lang.Exception ===
[@app1.MiscTest8$MyAnnotation()]
=== public static void app1.MiscTest8.main(java.lang.String[]) throws
java.lang.Exception ===
[@app1.MiscTest8$MyAnnotation()]
But when I run the same class files on Java 9, 10, 11, (and 12-ea) I get:
=== public app1.MiscTest8$Inner(app1.MiscTest8) throws java.lang.Exception ===
[]
=== public app1.MiscTest8$StaticInner() throws java.lang.Exception ===
[@app1.MiscTest8$MyAnnotation()]
=== public static void app1.MiscTest8.main(java.lang.String[]) throws
java.lang.Exception ===
[@app1.MiscTest8$MyAnnotation()]
Shouldn't I be able to find this annotation vis getAnnotatedExceptionTypes() on
Java9+, similar to how it works on Java 8?
Kind regards
Michael Rasmussen.
/* --- snip --- */
package app1;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.AnnotatedType;
import java.lang.reflect.Executable;
import java.util.Arrays;
public class MiscTest8 {
@Retention(value = RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE_USE)
@interface MyAnnotation {
}
class Inner {
public Inner() throws @MyAnnotation Exception {
}
}
static class StaticInner {
public StaticInner() throws @MyAnnotation Exception {
}
}
public static void main(String[] args) throws @MyAnnotation Exception {
foo(Inner.class.getDeclaredConstructor(MiscTest8.class));
foo(StaticInner.class.getDeclaredConstructor());
foo(MiscTest8.class.getDeclaredMethod("main", String[].class));
}
static void foo(Executable c) throws Exception {
System.out.println("=== " + c + " ===");
for (AnnotatedType exceptionType : c.getAnnotatedExceptionTypes()) {
System.out.println(Arrays.toString(exceptionType.getDeclaredAnnotations()));
}
}
}
/* --- snap --- */
